Large commercial complexes within the catering establishments should be in line with the following provisions:

(1) catering establishments should be centrally located on the same floor or in a centralized area on the same floor.

(2) When the catering establishments use natural gas as fuel, pipeline gas supply should be used. Gas shall not be used in catering establishments set up on the ground floor and with a floor area of more than 150 square meters or with a seating capacity of more than 75 seats.

(3) No open fire shall be used to process food in the dining area of the catering establishments, and electric heating facilities shall be used in the open food processing area.

(4) The kitchen area shall be arranged against the outer wall and shall be separated from other parts by a partition wall with a fire resistance limit of not less than 2h.

(5) The kitchen fume pipe should be cleaned at least once a quarter.